Binder for glass fiber threads



Patented- June 17, 1941 UNITED STATES PATENT OFFICE ammo BINDER FOR GLASS m THREADS Hana summit. Germany, assimi- Owens Corning Fiber-glee Corporation, '1 Ohio No Drawing. Apt liclflmllbmmiiflerialho.

284,100. In July 14, 10;.

s (0.1. leez) In the art of making threads or strands or B glass fibers and like fibers. it is well-known to I 7 Parts bind the fibers by means of adhesives such as Special w 10 gutta-percha, collodium, rubber solutions, var- Wax emulsifying agent.....-,. 2 nish, shellac, waxes or like substances. Although 5 Water 88 these adhesives have a good bindins D W? Hid fully close the threads, they possess numerous M disadvantages. Threads etli'lesiziiet l' wietlili m6 water 80w adhesives do not lend th ves w e v treatments such weaving mmnlfit-$8.?? .2212 22.1 a to their surface is not sumciently smooth and their v Animal or vegetable oii---..--.- 3 to 5 ability to slide is unsatisfactory. Moreover, the Gelatin, y 3 to 5 said adhesives either cannot be removed any more from the finished fabrics or they can only D be removed therefrom by the aid of organic sol- Parts vents, such as alcohol, benzine, ether, carbospecial 10 sulphide or the like, some of which are infiam- Wax 8111mm u mable or explosive. 3 2

However, in many cases it is necessary to remove the binder again from the finished glass fiber products because the favorable electrical and thermal properties of the glass are more or less reduced by the said adhesives.

It is the object of the present invention to provide a binder for glass fibers and. threads without the above-said disadvantages, i. e. a binder which has a high binding eifect and at the same time iubricates the threads or strands and can easily be washed out without having to use inflammable solvents for this purpose.

With this object in view, the binder according to the invention consists of diluted aqueous solutions of animal, vegetable or mineral oils, tats, waxes and the like or mixtures thereof, to which a water-soluble adhesive may be added for increasing the adhesiveness oi the binder.

These emulsions can be prepared in the usual manner practised in the art of making emulsions with the use of suitable emulsifying agents.

A glass fiber thread or strand sized with a binder according to the invention after the setting of the binder is well closed, soft and supple and has a brilliant, slightly fatty surface which renders it highly suited for textile treatments. The setting of the binder may be accelerated by artificial drying. The binder can be readily removed again by the. common textile washing media, such as aqueous soap solutions or the like.

Some examples of binders according to the invention are composed as follows:

s. 80to00 Water Emulsiiying agent such as iatty acid sulphonate.'. Animal or vegetable oil.......--... Yellow dextrine.-e-.--.....----..--

80 The emulsions may also contain up to 5% Without afiecting the possibility of removin the binder from the finished, products by washing, the binder may be given either a more pronounced binding efiect or a more. pronounced lubricating eflect as desired in accordance with the purpose for which it is used by a proper selection oi various oils or by ,suitablymixins oils and tats, adding waxes and using suitable 0 emulsiiyini asents. Thus, various modifications and variations may be resorted to without departing from the spirit and scope of the present invention as defined in the appendedclaims.

Having thus described my invention, what I 5 claim as new and desire Patent is:

1. A binder for glass fiber threads and the like, consisting or a diluted aqueous emulsion containing 3 to 10% Iatty acid sulphonate, 3 to 10% 40 oil and 3 to 10% dextrine.

composed of 10% wax, 2% wax emulsifying agent, 7% dextrine and 81% water.

5.A.blnderi'orgia8fiberthreedsandthelik comprising a diluted aque us emulsion containingstoiovt emulsiir seeenastemitor emuisivesubetaneeeelectedtromthegroupommunzoroiummamendstomamm.

to secure by Letters 

